Variable temperature ferroelectric testing system

FETS-2000 is an expandable and flexible deviceVariable temperature ferroelectric testing systemIt is also a domestically produced ferroelectric material performance testing equipment that can replace the TF Analyzer 2000 ferroelectric analyzer produced by Germany's aixACCT company. It can be widely used in research fields such as various ferroelectric/piezoelectric/pyroelectric thin films, thick films, bulk materials and electronic ceramics, ferroelectric sensors/actuators/storage devices, etc.

Main performance indicators for ferroelectric parameter testing:

a. External 5 kV high voltage amplifier (expandable to 10 kV) (applicable to both domestic and imported);

b. The frequency range for dynamic hysteresis loop testing is 0.01 Hz to 5 kHz;

c. Maximum charge resolution: 10 mC (scalable)；

d. Fatigue test frequency 300 kHz (amplitude 10 Vpp, load capacitance 1 nF);

e. Leakage current measurement range 1 pA~20 mA (expandable), resolution 0.1 pA;

f. Equipped with high-voltage breakdown protection module；

g. Temperature range: -160 ℃ to 260 ℃.

This testing system consists of a main controller, a high-voltage amplifier, a variable temperature comprehensive testing platform (equipped with a ferroelectric testing box) or a high and low temperature probe station (equipped with a high-voltage probe), a computer, and system software. The main controller integrates functions such as programmable waveform generator, built-in driving voltage, charge integrator, programmable amplifier, analog-to-digital converter, communication bus, etc. The main controller provides an external high-voltage amplifier interface that can be extended to ± 5 kV or ± 10 kV high-voltage amplifiers. The system software includes visual data acquisition and management functions. During testing, hysteresis, pulse, leakage, IV and other performance tests can be achieved without changing the connection of the test sample.

The ferroelectric performance test of this testing system adoptsimprovedSawyer- TowerCompared with the traditional Sawyer Tower mode, this circuit eliminates external capacitors and reduces the influence of parasitic components in the measurement method. The testing accuracy of this circuit depends only on the accuracy of the integrator capacitor, reducing the impact on the testing process, making it easy to calibrate and calibrate, and achieving high measurement accuracy.

Variable temperature ferroelectric testing systemAdopting modular design, different modules correspond to different electrical characteristic measurements. The measurement functions are as follows, which can be selected as needed:

Dynamic hysteresis loop DHM

Static hysteresis loop SHM

I-V characteristics

Pulse PUND

Fatigue

Electric breakdown strength BDM

Leakage current LM

Current bias voltage

Maintaining Strength RM

Imprint imprint IM

Temperature variation test THM

Optional modules:

POM module realizes polarization measurement function

CVM module implements small signal capacitance testing to obtain C-V curve

PZM module realizes piezoelectric characteristic testing

DPM module testing dielectric performance

RTM module testing resistance/resistivity performance

CCDM module realizes capacitor charging and discharging testing.